Q.

Two electric bulbs whose resistances are in the ratio of 1 : 2 are connected in parallel to a constant voltage source. The powers dissipated in them have the ratio

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a

1:2

b

1:1

c

2:1

d

1:4

answer is C.

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Detailed Solution

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Power dissipated, P=E2R

P1P2=E2R1E2R2=R2R1

Given, R1R2=12

P1P2=21 

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